“Our investigatory team is now looking to see if we can identify other similar clusters engaged in coordinated activity around the Brexit referendum that was not identified previously,” Simon Milner, Facebook’s policy director for Britain, wrote in a letter to Parliament.
Facebook faces a greater challenge in identifying potential Russian activity around the Brexit vote — if any exists — because British intelligence agencies have not identified a list of suspected accounts, as the American agencies did.
“We would be very interested in receiving any information, including intelligence assessments or reports, that you and the U.K. government may have that is relevant to this work,” Mr. Milner said in his letter, noting that the inquiry “requires detailed analysis of historic data by our security experts.”
Academic researchers have analyzed information from other social media platforms such as Twitter, where data is more accessible, and a few have found indications of Russian activity but not conclusive evidence. Many have urged more disclosure by Facebook, Twitter and other companies, which possess internal information about users and payments.
Damian Collins, the Conservative member of Parliament leading the inquiry, said in a statement, however, that “companies like Facebook should initiate their own research into issues like this, where there is such clear public concern, and not just act on intelligence that has been passed to them.”
“They are best placed to investigate activity on their platform.”